Solid-state laminate electrode assemblies and methods of making

A method for making a solid-state laminate electrode assembly, the method comprising the steps of

• i) providing a lithium metal laminate structure, the lithium metal laminate structure comprising:
• a. a lithium metal layer having a first major surface that is substantially unpassivated;
• and
• b. a first liquid phase inert protective material layer that removably covers the lithium metal layer first major surface, the first inert protective material layer in direct contact with the lithium metal layer first major surface;
• ii) providing an inorganic solid electrolyte laminate structure, the electrolyte laminate structure comprising:
• a. an inorganic lithium ion conducting sulfide glass layer having a first major surface and an opposing second major surface;
• and
• b. a second liquid phase inert protective material layer that removably covers the sulfide glass layer first major surface, the second inert protective material layer in direct contact with the sulfide glass layer;
• iii) removing the first inert protective material layer from the lithium metal layer first major surface;
• iv) removing the second inert protective material layer from the sulfide glass layer first major surface;
• v) reactively bonding the sulfide glass layer with the lithium metal layer via their first major surfaces;
• and
• wherein the reactive bond provides an interface between the sulfide glass layer and the lithium metal layer defined by a continuous solid electrolyte interphase.